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Combining uretdione and disulfide reversibly degradable polyurethanes : route to alternating block copolymers

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Summers, Christopher J., Day, Roger, Makal, Umit and Haddleton, David M. (2018) Combining uretdione and disulfide reversibly degradable polyurethanes : route to alternating block copolymers. Polymer Chemistry, 9 (19). pp. 2611-2616. doi:10.1039/c7py01978e

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Official URL: https://doi.org/10.1039/c7py01978e

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Abstract

Uretdione (temperature and catalyst controlled) and disulphide (REDOX controlled) functionalised polyurethanes have been described and the reversibility of these bonds tested. The polymers have been synthesised with reversible covalent groups present throughout their backbone, developing routes to reversibly degradable polyurethanes. These materials degrade and reheal in response to different external stimuli, which supplies a proof of concept for controlling the molecular weight, and therefore, the physical properties of a polyurethane. Further, a unique route to an alternating block copolymer is also discussed that utilises a mixture of disulphide and uretdione functionalised polymers as the reagents to form a thiourethane. The dramatically reduced safety hazards of dealing with the functionalised polymers, in comparison to the free isocyanate and thiols, could be of great interest to industrial application for current drives towards safer routes to polyurethanes.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Faculty of Science > Chemistry
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Block copolymers, Polyurethanes
Journal or Publication Title: Polymer Chemistry
Publisher: Royal Society of Chemistry (RSC)
ISSN: 1759-9962
Official Date: 21 May 2018
Dates:
DateEvent
21 May 2018Published
9 April 2018Available
6 April 2018Accepted
Volume: 9
Number: 19
Page Range: pp. 2611-2616
DOI: 10.1039/c7py01978e
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDLubrizolhttp://dx.doi.org/10.13039/100007036

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